Abunah s



ARUNAH VS. MACOMBER, .OF lBENNINGTONVERMO-NT.

Specicationj ofLettersVPatent No.l'6,000, dated `January 2,1849` To allwhom t may concern:

Be it kno-wn that I, ARUNAH S. MooM- BER, of Bennington, int-hecounty ofBennington and State of Vermont, have invented'` a new and usefulImprovement on a rIurning'- Lathe for Turning or ARimming OuttheInterior of Boxes for Carriage and v otherVVheels, whereby the saidboxes can be turned or. rimmed out ofwany required taper in a superiormanner. to any' other modeV known or usedgand I hereby do declare thatthe followingis a'full, clear, and .y

exact description;

The nature and principle of my invention consist in placing the box tobe turned or rimmed out on a lathe within a. revolving.

chuck through which passes a ixedgspindle with a cutter attached to itand yconnecting the said chuck and stock head to a saddle, which by aslot or slots thereinland'pivots or 'centers connecting the. said saddleto the slide, allows the saddle, puppet Aheads and chuck to be set atany angle with the cutter on the spindle, whereby boxes of any requiredtaper may be cut o-r rimmed out as the chuck revolves around the cutterand moves with the slide.

To enable others skilled in the art to make and use my invention I willproceed to describe its construction and operation, reference being hadto the accompanying drawings making a part of this specification, inwhich- Figure 1, is a side, Fig. 2, yan end, and Fig. 8, a semi sectionvertical view.

The same letters indicate like parts on all the figures.

In Fig. l, a lathe of the common kind is represented, and those partsnot implied in my invention need not be described.

A, is a fixed spindle, secured in proper bearings (fi) and (a2). Thisspindlecan be taken out at pleasure by unscrewing the screw bolt at (w).e

B, is the cutter' or chisel rmly secured to the spindle. (0,) (0,) arepuppetvheads made in the usual way and firmly secured by bolts or pinsto the plate or saddle D, represented in Fig. 3.

E, E, is the revolving chuck, resting in the puppets, and exhibited asprotruding therefrom in Fig. l. (o) represents set screws passingthroughthe chuck to key or hold firm the box placedmwithin thechuck tobe turned or rimmed out.

4supportedand held secure in the-chuck` turning around withthe'chuck.'

' 1 G, 'is' the puppet stock. It is planedand secured to. DLthesaddle'.l l

H, H,is a` sliding"fla-ingeA or plate frame" having mgmorentheunderfpartyon each side, toallowit to slide transversely on thearefpivotszto 'act as centersfor swivels, fori the saddle whenmovedon'H, H, at any'V angle with the cutter onthe'spin'dle.

L, L, L, L,are screws working through eyes` on the. sldemflangevH, withtheir points-or ends pressingthe 'sides of th'e'saddle so as "to f holdit rm and-secure onfthe slide and also at i the pointor angle. with thecutter, at' which itmay be set. -l f Mu is a screw Iworked by 'a handleN."-

It passes thr'ghaneye in the slide and an eye on the Hange H, H, to holdthe two firm and solid together and also for allowing the flange'to bemoved somewhat f. transversely on the rails lof the slide as seen inFig. 2. All the parts described are constructed in theV usual manner,with the exception of the pivots K, K, working in the slots .seen

in Fig; 3, whereby the-saddle D, can be setat any angle with the cutter.The saddlev can be moved transversely onthelatheand set angularlyf on"it likewise by the pivots,

"K, K, acting asswivels orcenters, for Athe saddle. The slide flange H,H may be moved somewhat transversely on the slide, but cannot bsetat'anyangle with the cutter, as the saddle can be, therefore, it is by I themanner inwhich D, is constructed and operated fthatboxes for carriages&c. can be turned or rimmed out of any taper required.

To do this, the operation is `as "a follows: Let` the box to be turnedor its v interior rimmed out, beplaced in the chuck,

as represented in Fig. 2, and if Ifdesire toV rim it out, I loosen thescrews L, L, in their eyes and move the saddleJ I), transversely` on H,H, (and thus" the stock, puppets and chuck and box with it) unt-il theinside of the box at one side presses against the knife or cutter chiselB. I then set the chuck in motion (having first made it secure andfirm'by the screws) by t-he driving band X, which passes down to thedriving shaft, and as the chuck revolves around the spindle and theslide moves in the usual way, the cutter by being in contact with theinside of the box F, while the chuck the chisel, than the center of theother end of the box is set from the cutting line. The less taper thatis desired in boxes, the more nearly equidistant from the cutter pointare the centers of both ends of the box in the chuck set, and thegreater the taper wanted, the center of one end of the box, is set at agreater, or the greatest distance from the cutting point while at theVsame time, the center of the other end of the box is set more near. thecutting line of the cutter. By this mode of setting the saddle D, (andwith it the box to berimmed out) atany angle with the cutter point, oneend of' the box if need be may be rimmed or turned out and the other endnot touched with the cutter at all. The points, or angles at which thesaddle and its movable parts, may be set with the cutter point, can beexactly determined by having an index on the upper surface of the flangeH, H, and a pointer attached to the puppet stock G. This plan of rimmingorv turning out the interior of iron boxes of any required taper forWheels &c., can be easily attached to every lathe and for rimming outcylinders, it will allow of a far shorter cutting chisel than is nowVemployed for such a purpose, thereby saving both money and labor.

Having thus explained the nature of my l invention, its construction andoperation, I do not claim the combination of the saddle D, with thepuppets, and'chuck, and flange on the A cutter on 'the lixed spindle, sothat? when the box and chuck revolve around the cutter,- and with theslide as it moves horizontally on the bed of the lathe, boxes forcarriage and other wheels may be turned or rimmed out of any requiredinterior taper substantially as set forth. A

y ARUNAH s. MAGOMBER.

Witnesses:

LYMAN S. PATCHIN,

GEORGE R. HoUGHToN.

